UFH control

[diamondgas]

Hi folks ... I'm hoping the quality of the image above is reasonable?

I've circled the part and numbered 1 and hope someone on here can help me out. I have had very little to do with underfloor heating systems but understand the principle of how it works. When I got to this job the circulating temp (3) was 30degC. The thermostat (1) wouldn't make a difference. I removed the head, still no change in the circ temp. A few taps of the spanner and pulling on the spindle seemed to free it. You could hear the water move through the valve and sure enough the temp started to rise. Unfortunately the thermostat did nothing when i replaced the head. The flow circ temp rose to 60degC!!! No mater how I tried to adjust the stat, nothing happened! So the only 'control' I had to adjust the thing was to close off the flow manually until the temp started to drop!

The valve is 3/4" and the mark on it is 'VAO' ... Anybody recognise this and can point me in the direction of a replacement then I'd be grateful 🙂 The manifolds are 1" and the centres are 210mm (2) I know you can get a replacement pump set but I'd rather not go down that line if there's a replacement out there for the flow regulating stat.

Over to you all 🙂 Anyone able to help me out?

Thanks for your assistance....

Steve

 

[SimonG]

Looks very similar to the uponor ones, might be worth a look/ask if it would be compatible.

 

[diamondgas]

Looks very similar to the uponor ones, might be worth a look/ask if it would be compatible.

Cheers Simon ... Would you know what the parts called I'm after? I've give it the name of "flow regulator stat", but I wouldn't know whether thats right or not TBH 🙂 It has a remote strap on phial that is attached to the flow manifold..!

 

[SimonG]

Sounds exactly like the uponor one. I'll dig out my bumf from the last one I did.

 

[diamondgas]

Cheers mate 🙂

 

[SimonG]

http://www.uponor.co.uk/~/media/cou...icelist/price-guide-april--2013.pdf?version=1

Page 76. They call it the thermostatic valve.

 

[diamondgas]

Thanks for the link Simon ... The valve's straight through rather than angled and it looks like the phial goes into a pocket top of the pump, is that right? I might give them a ring tomorrow see if they do an angled version 🙂

Mean time any other thoughts?

 

[SimonG]

Aye, the ones I've seen are straight through and I've seen the phial in a pocket and also clipped onto the pipe.

 

[diamondgas]

This UFH is an Italian, I think, design ... Pettinaroli ... Sounds Italian anyhoo's? 🙂

I've just found the paperwork for it ... ! Valve is Art.760P ... Head is Art.107LKIS .... Still draws a bit of a blank when I try to find a supplier ... Grrrrrrrrrrr!!!

And a link to the flippin set up http://www.e-pages.dk/pettinaroli/9/244 BUT I haven't got a clue where to turn to find a replacement 🙂 Anyone know of a place online that'll be able to help me out?

Cheers!

 

[happyflyer]

Diamond,

That looks like a pile of tosh if ever saw one, looks like a basic thermo angle valve with a none return valve, can you give the job to someone else.
I doubt if that is going to catch on, is it Italian, nuff said.

 

[Ermintrude]

This should really be a blending valve and not that tosh. Myson blending valve £89 plus vat. Would require a little re jig as CH flow manifold return mix and go into pump.

 

[Deleted member 64540]

Product is distributed in the uk by this company

MARFLOW HYDRONICS LIMITED
Britannia House, Austin Way, Hamstead Industrial Estate, Birmingham UK. B42 1DU.
Tel. +44 (0)121 358 1555 - Fax. +44 (0)121 358 1444

 

[stevetheplumber]

its a cheap and nasty way to control under floor heating temperature i may be wrong but i thought the phial was supposed to be on the return manifold the way it is it will start to close as soon as hot water hits it
if its on the return it closes when the return water starts to get too hot indicating the underfloor is up to temperature

 

[happyflyer]

This should really be a blending valve and not that tosh. Myson blending valve £89 plus vat. Would require a little re jig as CH flow manifold return mix and go into pump.

For once we agree Ermi a proper blending valve, to rely on something like this to control the temperature, I give in

 

[Ermintrude]

Royal we ?

 

[happyflyer]

Royal we ?

If you say so Ermi, then so be it :biggrinjester: but me thinks I am but the court jester here on PF

 

[diamondgas]

Diamond,

That looks like a pile of tosh if ever saw one, looks like a basic thermo angle valve with a none return valve, can you give the job to someone else.
I doubt if that is going to catch on, is it Italian, nuff said.

Hi mate ... It is a load of tosh but it's in the missus's business office! Not an easy one to turn away from alas .... I was considering getting a whole new 'pump set' to be honest! Just something I've never had to deal with!

 

[diamondgas]

Product is distributed in the uk by this company

MARFLOW HYDRONICS LIMITED
Britannia House, Austin Way, Hamstead Industrial Estate, Birmingham UK. B42 1DU.
Tel. +44 (0)121 358 1555 - Fax. +44 (0)121 358 1444

thanks for the contact details, its a lead that might help me out ... :clap: 🙂

 

[diamondgas]

This should really be a blending valve and not that tosh. Myson blending valve £89 plus vat. Would require a little re jig as CH flow manifold return mix and go into pump.

Would you have a link to that and the pipework configuration Ermintrude? I'd no doubt be able to work it out but seeing a diagram of how they should be fitted is always helpful 🙂 As said before I know the basics but have not had to work on one as in depth as now !!

 

[diamondgas]

its a cheap and nasty way to control under floor heating temperature i may be wrong but i thought the phial was supposed to be on the return manifold the way it is it will start to close as soon as hot water hits it
if its on the return it closes when the return water starts to get too hot indicating the underfloor is up to temperature

Hi Steve ... this thing doesn't close at all now ... I think the office is going to be like a sauna this morning 🙂 Honestly wish I could step away from this but alas...! They have two blocks of manifolds upstairs and down. BOTH TOSH 🙂

 

[diamondgas]

Thanks all for your input, bye the way! I was out watching Captain Philips last night but was really grateful to see the replies this morning!

I've done a bit of research in the past and came across a new pump setup with the same manifold centers. They're an expensive piece of kit to buy and am reluctant to go down that route unless it's the only one.... Anyone done much in the way of repairs on UFH systems? Would changing the pump setup be feasible?

 

[Ermintrude]

View attachment 15653

Hi folks ... I'm hoping the quality of the image above is reasonable?

I've circled the part and numbered 1 and hope someone on here can help me out. I have had very little to do with underfloor heating systems but understand the principle of how it works. When I got to this job the circulating temp (3) was 30degC. The thermostat (1) wouldn't make a difference. I removed the head, still no change in the circ temp. A few taps of the spanner and pulling on the spindle seemed to free it. You could hear the water move through the valve and sure enough the temp started to rise. Unfortunately the thermostat did nothing when i replaced the head. The flow circ temp rose to 60degC!!! No mater how I tried to adjust the stat, nothing happened! So the only 'control' I had to adjust the thing was to close off the flow manually until the temp started to drop!

The valve is 3/4" and the mark on it is 'VAO' ... Anybody recognise this and can point me in the direction of a replacement then I'd be grateful 🙂 The manifolds are 1" and the centres are 210mm (2) I know you can get a replacement pump set but I'd rather not go down that line if there's a replacement out there for the flow regulating stat.

Over to you all 🙂 Anyone able to help me out?

Thanks for your assistance....

Steve

View attachment 15654

Basically flow from boiler and return from manifold into either side of blending valve.

Return connected to top end of manifold on locksheild. Will send you a sketch later

 

[diamondgas]

Product is distributed in the uk by this company

MARFLOW HYDRONICS LIMITED
Britannia House, Austin Way, Hamstead Industrial Estate, Birmingham UK. B42 1DU.
Tel. +44 (0)121 358 1555 - Fax. +44 (0)121 358 1444

That was a perfect lead that got me to the supplier and part i needed. Many thanks PlumberShopLee 🙂

 

[diamondgas]

Basically flow from boiler and return from manifold into either side of blending valve.

Return connected to top end of manifold on locksheild. Will send you a sketch later

I'd appreciate it Ermintrude ... I've tracked down the part needed and await a quote for replacement (emailed the company). However I'd like to get a better handle on anything that'd replace what's in just in case needed for the future.. Cheers 🙂